split a square into finitely many hexagons with inner angles all < 180^o
Source: Germany Federal - Bundeswettbewerb Mathematik 2011, round 2, p1
April 15, 2020
squarehexagonTilingcombinatorial geometrytilesanglesgeometry
Problem Statement
Prove that you can't split a square into finitely many hexagons, whose inner angles are all less than .